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Re: [tycho-user] Update on macOS fails to execute chmod

cross-posting to p2-dev as this is happening in p2 code


chmod not being on the PATH seems strange to me.





From: <tycho-user-bounces@xxxxxxxxxxx> on behalf of Thomas Kutz <thomas.kutz@xxxxxxxxx>
Reply-To: Tycho list <tycho-user@xxxxxxxxxxx>
Date: Monday, 6. August 2018 at 16:45
To: Tycho list <tycho-user@xxxxxxxxxxx>
Subject: [tycho-user] Update on macOS fails to execute chmod


Hi all,


I am experiencing problems when updating my tycho built product on macOS. So this is my scenario:


I have a product built with tycho 1.0.0 based on Eclipse Oxygen (org.eclipse.rcp_4.7.2.v20171130-0510) and an update-site containing a newer version of my custom features. When I update this product eclipse with the features on my update-site, the executable looses its executable bit, so I cannot open my product anymore. 


I debugged it remotely and found out that there is an exception thrown in ChmodAction when trying to execute Runtime.getRuntime().exec("chmod", "755", "path/to/executable"): Cannot run program “chmod”: error=2, No such file or directory


How can it be that chmod is not found (other binaries like "echo" are not found either)?


This problem occurs on several macOS systems. That said, I should mention that we also have an older version of our product (based on Neon) for which the update mechanism works fine.


Is this something known, or does anyone have a clue what I can further test to spot the bug?



Best regards,

Thomas Kutz
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